【摘要】 本试验采用二次回归旋转组合设计,建立了小麦产量回归模型。通过计算机模拟寻优及模型解折,研究了播期、密度、氮肥、磷肥、追肥时期等主要栽培因素与产量的关系,提出了小麦高产栽培最佳农艺措施组合方案更多还原

【Abstract】 The design of quadratic orthogonal rotation regresion was used in this experiment to set up a yield function model of wheat. The relationship between yield and the primary factors of wheat cultivation was analyzed with computer. According to optimization analysis from the model of yield, more attention must be paid to sowing date, density, nitrogen fertilizer and the date of nitrogen topdressing. The yield of wheat was affected significantly by the correlation between sowing date and density, density and the date of nitrogen topdressing. By frequency analysis, the best agronomic measures were proposed respectively for the output of 500-600, 600-700, 700-800 and more than 800 jin/mu更多还原